Earth's Structure
Earthquakes 1
Volcanoes
Earthquakes 2
Mountains
100

The layer of Earth that can be oceanic or continental.

What is the crust?

100

The S in S-waves stands for this.

What are "Secondary" waves?

100

Location around the perimeter of the Pacific plate known for volcanic and earthquake activity.

What is the Ring of Fire?

100

The P in P-wave stands for this.

What are "Primary" waves?

100

Type of plate boundaries where mountains form.

What are convergent plate boundaries?

200

The depth of the mantle.

What is 2900km thick?

200

Scale used to measure the strength of an earthquake.

What is the Richter scale?

200
Avalanche of hot gas, ash, and rock.

What is pyroclastic flow?

200

Large wave created by an underwater earthquake.

What is a tsunami?

200

Tallest mountain range in the world.

What are the Himalayas?

300

The outer core is made up of this.

What is liquid iron and nickel?

300

A crack in Earth's crust.

What is a fault?

300

A volcano that is not currently erupting, but is expected to erupt again in the future.

What is a dormant volcano?

300

These seismic waves do the most damage.

What are Surface Waves?

300

Top of curves in mountain folds.

What are anticlines?

400

Made up of the crust and the uppermost part of the mantle.

What is the lithosphere?

400

Order that seismic waves hit.

What are P wave, S wave, Surface Waves?

400

Used to measure the magnitude of an eruption.

What is the VEI index?

400

Instrument used to record seismic waves.

What is a seismograph?

400

Bottom of curves in mountain folds.

What are synclines?

500

The temperature of the inner core.

What is 6000oC

500

Two types of surface waves.

What are Love and Rayleigh waves?

500

Explosive type of volcano, often with multiple vents.

What is a stratovolcano?

500

Difference in strength between a 5.0 and 2.0 earthquake.

What is 1000x stronger?

500

Spanish for mountain range.

What is "cordillera"?

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